I can't tell anything from your pics. I do know that you can always carefully take a hair dryer and shrink wrinkles or puffy spots out of the liner provided its above water. Vinyl shrinks with a little heat, so if your really not happy with the wrinkle or its unsightly, just heat them and rub as you heat and they will usually disappear. But I would wait and see what the sun will do over a couple hot days. That may actually take care of it for you.
I am sorry to say it does shrink with heat, it stretches and also can melt a hole if not careful
Thanks the responses Tedoff and PS588! Some pretty big wrinkles have since developed under the waterline in the same area. One of them is 3 or 4 feet long. Hopefully I can get the installer back out here to take a look. I have heard about the blow dryer and also about using a toilet plunger, but I'm afraid I might just make things worse...
Thanks again.
Dave